Developer utilities · P0 OSS adapter · No signup
JWT Claims Inspector
Decode a compact JWT protected header and payload locally with jose, then summarize common time claims without pretending that decoding verifies the signature.
High-intent OSS workbench · no signup
Run the bounded check in this browser.
Boundary: Decoded header and claims are untrusted data until cryptographic verification succeeds with an appropriate trusted key and policy. This tool does not verify signatures, issuer, audience or authorization.
Open-source foundation
jose
License: MIT. Runtime version: 6.2.11. The browser bundle is exact-version pinned rather than following latest.
View upstream repositoryShareable utility
Finish the job, then pass the tool to the next person who needs it.
The free result stays useful on its own. Sharing points to the tool page only; unmatched commercial intent stays in the free-tool network instead of being forced into a generic product directory.
Open Free tool networkFilm-ready quick start
Start with the problem. Tap once. Reveal the finding.
JWT Claims Inspector
Your browser shelf
Save JWT Claims Inspector locally in this browser, or copy a direct link. No account is required.
Shareable utility
Finish the job, then pass the tool to the next person who needs it.
The free result stays useful on its own. Sharing points to the tool page only; unmatched commercial intent stays in the free-tool network instead of being forced into a generic product directory.
Publisher / community kit
For a README, newsletter, blog, forum answer or resource list: copy a clean production backlink without copying the visitor's input or result.
Attribution uses the tool slug and CTA placement only. Share and publisher links use the canonical production URL. The growth event contract never includes input text, uploaded-file contents or generated output.
Demand → exact tool → next useful action
Send people to this exact job, not the generic tools homepage.
Copy a channel-attributed deep link to JWT Claims Inspector. Every link lands on this exact tool; the canonical page stays clean for search engines, and no visitor input or result is placed in the URL.
Next useful tools · Developer utilities
Machine-readable inventory: /free-tools/distribution.json.
Product-as-content · creator kit
Can the value land before the explanation?
Use this as a silent-demo production template for Shorts, Reels, TikTok, a launch GIF or a community post. The first second should show the tension or transformation — not a logo, setup screen or narrated promise.
Vertical capture · 9:16
405×720 reference · 10s
Keep the actual input, primary action and proof result inside the central vertical frame; browser chrome is not the product proof.
Append ?wow=1 for the deterministic capture helper. It injects input only when an owned synthetic fixture exists, then captures the real tool action and result.
Transformation
uncertain or failing input → visible findings / pass state
0–1 second · hook
Open on a clearly failing synthetic example and make the fail/error state visible immediately.
1–6 seconds · action
Run JWT Claims Inspector; keep the cursor and framing on the one action that produces the check.
6–10 seconds · proof
Cut straight to the named findings, PASS state, or before/after count. Do not hide the result behind narration.
Try JWT Claims Inspector free — no signup.
Safety / truth boundary: use synthetic or public-safe demo data only. Never show secrets, private customer material, fabricated metrics or a pass/certification claim the tool does not actually produce. This template improves demonstrability; it does not promise reach or virality.